Recent years, since the development of mining and energy exploration as well as some large-scale infrastructure construction projects, tungsten carbide for mining, such as tungsten carbide buttons, bits, picks, mills, DTH drills and some supporting tools has been widely used and the market demands increased gradually. With the rapid development of metallurgical industrial technology of our country, in gas, fuel oil, natural gas drilling, some demands of mechanical mining equipment and large and medium pore diameter drill with carbide ore also increased. Mining tools take advantage of WOB and rotation of the impact load itself broken rock, drill and buttons during operation when subjected to high impact loads at the same time by twisting, bending, stretching, compression and other complex stress. And it subjected to the wear and corrosion by rocks, rock dust, mineral water, etc. at high-speed rotation. So it requires that tungsten carbide used for mining not only has high hardness and toughness, but also has good wear and corrosion resistance.

In order to combine wear resistance with toughness, relevant researchers develop many new types of carbide, such as ultra-fine or nano cemented carbide, high-temperature powder based carbides, functional gradient tungsten carbide, low-Co and coarse grain carbide, double binder phase and double crystalline structure, etc. Double binder phase was developed by American company, which fully dense WC-Co pellets embedded in Co matrix to remain the similar wear resistance of common alloys. The binder phase can be any bonding metal, alloy or another kind of cemented carbide.

The most outstanding characteristic is that the hard phase is not a hard compound (WC), which is composed of refractory metal compound and Co sintered hard material into crystalline pellets (WC-Co) composition and mixed with binder metal for secondary sintering. Compared with most of double phase tungsten carbide, double binder phase carbide has greater design freedom (size, hardness, toughness, strength of base and so on), which has been widely used in rolling cutter bits, impacting bits, dragging bits and other tools. Double crystalline tungsten carbide is also called as non-uniform grain carbide. Since the WC grain size distribution curve has two peaks, it can be also known as bimodal-structure tungsten carbide. This kind of structure coarse grain WC can provide good ductility and toughness, and a certain proportion of fine grain WC is able to provide high wear resistance.

In the year of 2015's "Made in China 2025" is the Programme of Action for the Decade of manufacturing power, which was first proposed implementation strategy. It takes "high-end CNC machine tools and robots" as a key area to vigorously promote. And it has proposed development of a number of precision, high speed, high efficiency, flexible CNC machine tools and basic manufacturing equipment and integrated manufacturing systems; accelerate the development of high-end CNC machine tools, manufacturing, and other materials by cutting-edge technology and equipment; To enhance the reliability, precision keeping the focus on the development of high-end CNC system, servo main features and key applications software motor, bearing, grating, accelerate industrialization; enhance the user process validation capacity building.

CNC machine tools is the mainstream of modern manufacturing equipment, which is he embodiment of modern technology, an important symbol of modern machinery manufacturing technology level, is relative to the people's livelihood, national defense building strategic materials. Although since 2002, China has become the biggest country in world machine tool imports and consumption, it has significant export deficit, especially in High-grade, large, sophisticated, high-speed CNC machine tools and CNC systems degree dependence on imports. So overcome technical bottlenecks, narrowing the gap with the international advanced level in the country has become the direction of development of CNC machine tools. Due to tungsten carbide has high hardness, excellent wear resistance, and it can be the best choice for indexable insert. In the process of CNC machining, tungsten carbide indexable inserts have many advantages:
1. It is difficult to produce the cracks and cracks expansion;
2. It can adopt CVD or PVD to deposit a harder layer (TiC, TiN, CBN) on tungsten carbide matrix surface to improve the cutting property;
3. Simple operation, shorter time for tool changing, high machining efficiency;
4. Tungsten carbide indexable inserts are standardized and centralized production, which has consistent blade geometry parameters, cutting control and stability, and a very wide scope.

Due to a high melting point and high corrosion resistance, tungsten heater is widely used in vacuum aluminizing. With the rapid development of electronic information market, high-performance chips, the new display and other electronic devices market has a good development space. The key support of electronics manufacturing is a thin film material, and because of the lower resistivity, and it is easy to deposit, and the mature technology and other excellent characteristics, a thin aluminum film has become core material for integrated circuits, discrete devices, liquid crystal display and other related fields. Compared to developed countries, the time of the development of ultra-high purity aluminum and its alloys evaporation material is relatively late, there is still a certain gap to well-known international companies in process maturity and industry development. Although China is one of the largest countries for reserves of tungsten resources in the world, but due to the immaturity of the technology, tungsten heater cannot satisfy domestic market in vacuum aluminizing. As a result of it, most buyers have to import products from abroad, which would not only time consuming but also a greater cost.

Recently, China News reported that sets of technology system have been established of ultra-high purity aluminum and its alloy coating materials, realizing the development and industrialization of electronic information field the ultra-high purity aluminum evaporation materials, semiconductor of aluminum and its alloy target material and a full range of coating materials. The localization of ultra-high-purity aluminum and its alloy coating materials will accelerate the development of high-end high-purity thin film material, greatly facilitate the improvement of traditional non-ferrous metal industries and industrial extension technology, and prefect the advanced electronic information manufacturing industry and supply chain of accessory products. Vacuum aluminizing has the feature of plastic film and the properties of the metal. The function of vacuum aluminizing is that it can prevent ultraviolet ray, which prolongs quality guarantee period and improves the brightness and perception of film.

In recent years, China's economic situation is not optimistic, not only China, the global economy is in the doldrums, although China's GDP is still growing, but the growth rate has declined for five years, and it is likely to continue declining in next few years. After years of rapid economic growth, the current slow growth is a normal phenomenon. Peking University scholars believe that China is undergoing historic economic restructuring. In this tough economy condition, businesses and individuals need to do the pre-judgment for the future development. In addition, the continuous depreciation of the RMB has a great impact on the domestic economy.

What are the main reasons for the decline of China's current economy? Professor of Economics Hai Wen said that the first reason is a long-term trend. The growth of a country's economic cannot always keep 10% of high growth. On the other hand, the second reason is now China is now facing macroeconomic cycle. This recession is still a continuation of the 2009 recession. It can be seen from the tungsten market a few months ago that the price is fluctuating and most buyers have been kept wait-and-see attitude for a long time, resulting in the overall trading volume of whole tungsten market (tungsten heater) is in decline. While China's GDP growth rate has slowed compared to previous years, China's economy still has a great potential for development. Because China is in the take-off stage of economic, and the development potential is from the four areas, including services, urbanization, technology, innovation and manufacturing industry and the new developed space to brought by " The Belt and Road Initiative ". With the development of science and technology, it is believed that there will be more room for the development of China's economy in the future. Therefore, the tungsten market will be better soon.

Mineral resources are non-renewable resources, due to its limited reserves, China has strengthen the control of it in recent years. It is an important material basis for the development of social production, and production and life of modern society have already cannot separate with mineral resources. Moreover, China is currently in the mid-industrialization, the demand of mineral resources is increasing. China Mining News reported that the Ministry of Land and Resources of the People’s Republic of China made it clear in the near future that China will further strengthen the exploration and protection of important mineral resources. Land and Resources issued the “Land Resources ‘Thirteen Five’ Plan” which focus on the implementation of effective control of mining tungsten, rare earth ions, etc., strictly limiting the development of minerals and tailings resources which cannot be reasonably used, so that it can avoid the destruction and the waste of resources. Strictly managing development access of mineral resources, improving entry barriers of environmental protection, technology, investment, efficiency of resource use and others.

Although China is one of the biggest tungsten ore reserves countries in the world, but because of irrational exploitation and utilization, leading to the depletion of mineral resources. This regulation has the impact on the tungsten market. On the one hand, it would limit the production of the tungsten heater to a certain extent, and now it can ease the problem of oversupply of tungsten market. On the other hand, this plan can improve the development and utilization of mineral resources, protection China’s mineral resources. With the development of China's industrialization process, environmental pollution has also increased year by year, haze, acid rain and other natural disasters annually cause some damage to economy and the environment. This strengthening of controls will slow down the pollution of the environment to some extent.

After two meetings of tungsten enterprises in November, 2015 and February, 2016, the third meet whether it can further improve the tungsten market in June 7 was attracted much attention by public. The meeting was held in Chaozhou, enterprises who attended the meeting own more than 27 tungsten mine, and the production of tungsten concentrate is more than 50% of domestic production, so the market is accustomed to call these eight tungsten mining enterprises as "Eight Tungsten Enterprises". Recently, economic situation in China is in a depressed state, and tungsten market is also in turmoil. China's mainstream tungsten enterprises have been facing serious losses and the loss of strategic raw materials for 2 years. During this period, China's mainstream tungsten enterprises continue to take positive action to keep market stability, which save the critical situation of tungsten market.

The convening of the meeting could help restore confidence of private tungsten enterprises, and the leading of those large tungsten enterprises will directly has a significant impact on the private enterprises. Some effective policies put forward in the meeting, such as limited production, support value, restricted sales and other measures, which will greatly save the current sluggish state of the market. Eight tungsten enterprises reached an agreement in this meeting agreed to make that would reverse the declining situation of tungsten market.

As a national rare earth resource, China will introduce some relevant policies for tungsten, continuing to promote the steady development of tungsten market. The volume of tungsten has been continuing to reduce for a long time. This the third meeting likes fuel delivered in the snow, tungsten prices are expected to rise to a certain extent, but the possibility of a sharp rise is relatively small. Prices of tungsten heater and other related products will also increase. All in all, these three meetings will directly promote the future development of the tungsten market.